//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 2.2
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// First Release on Dec 05 2007
// i'm looking for a job,pick me up!!!
// mail: renzi.mrc@gmail.com
//**************************************************************

(function($){
		$.fn.jqueryzoom = function(options){
		var settings = {
				xzoom: 325,		//zoomed width default width
				yzoom: 325,		//zoomed div default width
				offset: 10,		//zoomed div default offset
				position: "right" ,//zoomed div default position,offset position is to the right of the image
				lens:1, //zooming lens over the image,by default is 1;
				preload: 1
			};
			if(options) {
				$.extend(settings, options);
			}
		    var noalt='';
		    $(this).hover(function(){
		    var imageLeft = $(this).offset().left;                
		    var imageTop = $(this).offset().top;
		    var imageWidth = $(this).children('img').get(0).offsetWidth;
		    var imageHeight = $(this).children('img').get(0).offsetHeight;
            noalt= $(this).children("img").attr("alt");
		    var bigimage = $(this).children("img").attr("jqimg");
            $(this).children("img").attr("alt",'');
		    if($("div.zoomdiv").get().length == 0){
		    $(this).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");
		    $(this).append("<div class='jqZoomPup'>&nbsp;</div>");
		    }
		    if(settings.position == "right"){
            if(imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width){
            leftpos = imageLeft  - settings.offset - settings.xzoom;
            }else{
		    leftpos = imageLeft + imageWidth + settings.offset;
            }
		    }else{
		    leftpos = imageLeft - settings.xzoom - settings.offset;
		    if(leftpos < 0){
            leftpos = imageLeft + imageWidth  + settings.offset;
		    }
		    }
		    //$("div.zoomdiv").css({ top: imageTop,left: leftpos });
		    $("div.zoomdiv").width(settings.xzoom);
		    $("div.zoomdiv").height(settings.yzoom);
            $("div.zoomdiv").show();
            if(!settings.lens){
              $(this).css('cursor','crosshair');
			}
			$(document.body).mousemove(function(e){
                   mouse = new MouseEvent(e);
                   /*$("div.jqZoomPup").hide();*/
				    var bigwidth = $(".bigimg").get(0).offsetWidth;
				    var bigheight = $(".bigimg").get(0).offsetHeight;
				    var scaley ='x';
				    var scalex= 'y';
				    if(isNaN(scalex)|isNaN(scaley)){
				    var scalex = (bigwidth/imageWidth);
				    var scaley = (bigheight/imageHeight);
				    $("div.jqZoomPup").width((settings.xzoom)/scalex );
		    		$("div.jqZoomPup").height((settings.yzoom)/scaley);
                    if(settings.lens){
                    $("div.jqZoomPup").css('visibility','visible');
					}
				   }
                    xpos = mouse.x - $("div.jqZoomPup").width()/2 - imageLeft;
                    ypos = mouse.y - $("div.jqZoomPup").height()/2 - imageTop ;
                    if(settings.lens){
                    xpos = (mouse.x - $("div.jqZoomPup").width()/2 < imageLeft ) ? 0 : (mouse.x + $("div.jqZoomPup").width()/2 > imageWidth + imageLeft ) ?  (imageWidth -$("div.jqZoomPup").width() -2)  : xpos;
					ypos = (mouse.y - $("div.jqZoomPup").height()/2 < imageTop ) ? 0 : (mouse.y + $("div.jqZoomPup").height()/2  > imageHeight + imageTop ) ?  (imageHeight - $("div.jqZoomPup").height() -2 ) : ypos;
                    }
                    if(settings.lens){
                    $("div.jqZoomPup").css({ top: ypos,left: xpos });
                    }
					scrolly = ypos;
					$("div.zoomdiv").get(0).scrollTop = scrolly * scaley;
					scrollx = xpos;
					$("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;
				    });
		    },function(){
               $(this).children("img").attr("alt",noalt);
		       $(document.body).unbind("mousemove");
		       if(settings.lens){
		       $("div.jqZoomPup").remove();
		       }
		       $("div.zoomdiv").remove();
		    });
        count = 0;
		if(settings.preload){
		$('body').append("<div style='display:none;' class='jqPreload"+count+"'>s</div>");
		$(this).each(function(){
        var imagetopreload= $(this).children("img").attr("jqimg");
        var content = jQuery('div.jqPreload'+count+'').html();
        jQuery('div.jqPreload'+count+'').html(content+'<img src=\"'+imagetopreload+'\">');
		});
		}
		}
})(jQuery);
function MouseEvent(e) {
this.x = e.pageX;
this.y = e.pageY;
}
$(function(){$(".jqzoom").jqueryzoom({xzoom:325,yzoom: 325});});